Method for manufacturing an element having grooved trunnions and

Details Method for manufacturing an element having grooved trunnions and Method for manufacturing an element having grooved trunnions and

1989-03-23

1990-06-26

Crane, Daniel C.

Metal deforming

With cutting

Machining after final metal-deforming

72402, 72452, 29898043, 298981, 384213, 464 7, B21K 102

Patent

active

049361333

ABSTRACT:
The present invention is drawn to a method of manufacturing a tripod element of a homokinetic joint, and more particularly, to a method of forming grooves in the trunnions of a blank from which the tripod element is manufactured. The grooves are formed by punches which have forming edges profiled in correspondence with the grooves to be formed. The blank is positioned such that the punches occupy respective spaces each defined between two adjacent ones of the trunnions and such that the forming edges confront the trunnions, respectively. At least one of the punches is moved in a direction toward the central axis of the blank until the respective ones of the forming edges of the punches contact the trunnions to cause the blank to be self-positioned in contact with the forming edges. Subsequently, relative movement is imparted between the punches and the blank under a force sufficient to cause all of the punches to move relative to the blank in a direction toward the central axis of the blank so that the forming edges penetrate the trunnions to form grooves therein. The blank may then be subjected to heat treatment.

REFERENCES:
patent: 3583198 (1971-06-01), Drallmeier
patent: 4381659 (1983-05-01), Welch et al.

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